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CIDR
/20 · 4.1K IPs
ASN
O2 Czech Republic, a.s.
Reverse DNS
—
No PTR record
Blocklisted
Checking…
Scanning blocklists

Reputation · trust score

A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.

80/100
Trusted
How this score is built

Experimental · trust-vectors model v1.2.1 — a transparent heuristic, not a definitive verdict. How it works →

Reverse DNS history

How this IP's reverse DNS (PTR) has changed over time, from our scans.

Reverse-DNS changes between Jun 11, 2026 and Oct 1, 2026 were not recorded; the current PTR is shown from its earliest retained observation.

  1. no PTR — since at least Oct 1, 2026 → present
  2. 90-183-79-8.rcq.o2.cz stable — Jun 11, 2026 → Oct 1, 2026

Network Allocation for 90.183.79.8

CIDR range
90.183.64.0/20
IP range (int)
1,521,958,912 — 1,521,963,007
Prefix length
/20
Organization
O2 Czech Republic, a.s.
ASN
AS5610
ASN name
O2 Czech Republic, a.s.
Location
Krnov, Moravian Silesian Region, Czechia
Coordinates
50.089700, 17.703800
Accuracy radius
50 km
Postal code
794 01
Regional Internet Registry
RIPE
Allocated
2006-09-17
Data source(s)
maxmind_city, maxmind_country, maxmind_asn, ipinfo_lite
Last updated
2026-10-01 08:45:21

Origin AS announcing the most-specific prefix that covers this IP, observed across our RIPE RIS collectors.

Announced prefix
Origin AS
Announcement samples
27,942
Last seen
2026-10-01 20:07:41

Frequently Asked Questions

Who owns 90.183.79.8?

90.183.79.8 is allocated to O2 Czech Republic, a.s. (AS5610), registered in Krnov, Czechia.

Where is 90.183.79.8 located?

The geolocation for 90.183.79.8 maps to Krnov, Czechia based on MaxMind GeoLite2 data. Accuracy depends on the provider and may represent the ISP's regional hub rather than the exact endpoint.

What network is 90.183.79.8 on?

90.183.79.8 belongs to the 90.183.64.0/20 network block announced by AS5610. This range contains 4,096 addresses.

Does 90.183.79.8 have a reverse DNS record?

Reverse DNS (PTR) records are resolved live when you visit this page. If a PTR record exists, it appears in the Reverse DNS field above. PTR records map IP addresses back to hostnames and are commonly used for email authentication and network diagnostics.

Neighbors

Other addresses in the same /24.

Related

Last updated: 2026-10-01 17:13:31 UTC
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